DTC B1E12[02] Center LF Antenna Signal Failure (Wireless Access Module (Hi-version [Passive Entry and Start System]))

1. Wireless access module system check

Refer to "71.Security and Locks Control 10S.Troubleshooting(Wireless Access Module (Hi-version [Passive Entry and Start System])) Diagnostic system check-Wireless Access Module (Hi-version[Passive Entry and Start System])".

2. Current DTC check

1) Connect the scan tool.

2) Turn OFF the ignition switch.

3) Press the engine start/stop button several times.

4) Observe the DTC information with a scan tool. Is a DTC set?

Yes

=>Go to Center in-vehicle antenna harness connector inspection.

No

Go to Intermittent conditions of wireless access module.

Refer to "229.Security and Locks Control 42D.Symptom intermittent conditions of wireless access module".

3. Center in-vehicle antenna harness connector inspection

1) Inspect for poor connections at the center in-vehicle antenna harness connector (pins 1 and 2 of B77). Is the connection status normal?

Refer to "LHD Power Door Locks (Wireless Access Module (Hi-version))" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD Power Door Locks (Wireless Access Module (Hi-version))" in the ETM (wiring diagram). (Open using the ETM viewer.).

Yes

=>Go to Inspection for open circuit and short circuit in center in-vehicle antenna (+) circuit.

No

Repair the connections as necessary.

=>Go to Repair verification.

4. Inspection for open circuit and short circuit in center in-vehicle antenna (+) circuit

1) Inspect the center in-vehicle antenna (+) circuit between the wireless access module (pin 7 of B15) and the center in-vehicle antenna (pin 1 of B77) for the following. Is the result normal?

Refer to "LHD Power Door Locks (Wireless Access Module (Hi-version))" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD Power Door Locks (Wireless Access Module (Hi-version))" in the ETM (wiring diagram). (Open using the ETM viewer.).

Yes

=>Go to Inspection for open circuit and short circuit in center in-vehicle antenna (-) circuit.

No

Repair the circuit as necessary.

=>Go to Repair verification.

5. Inspection for open circuit and short circuit in center in-vehicle antenna (-) circuit

1) Inspect the center in-vehicle antenna (-) circuit between the wireless access module (pin 27 of B15) and the center in-vehicle antenna (pin 2 of B77) for the following. Is the result normal?

Refer to "LHD Power Door Locks (Wireless Access Module (Hi-version))" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD Power Door Locks (Wireless Access Module (Hi-version))" in the ETM (wiring diagram). (Open using the ETM viewer.).

Yes

Replace the center in-vehicle antenna.

Refer to "9.Body, Cab, Accessories 9J.Security and Locks center in-vehicle antenna removal".

Refer to "9.Body, Cab, Accessories 9J.Security and Locks center in-vehicle antenna installation".

=>Go to Current DTC follow-up check.

No

Repair the circuit as necessary.

=>Go to Repair verification.

6. Current DTC follow-up check

1) Clear the DTC with a scan tool.

2) Turn OFF the ignition switch.

3) Press the engine start/stop button several times.

4) Observe the DTC information with a scan tool. Is a DTC set?

Yes

=>Go to Wireless access module replacement.

No

=>Go to Repair verification.

7. Wireless access module replacement

Refer to "9.Body, Cab, Accessories 9Z.Body, Cab, Accessories Electrical Control wireless access module removal".

Refer to "9.Body, Cab, Accessories 9Z.Body, Cab, Accessories Electrical Control wireless access module installation".

Refer to "9.Body, Cab, Accessories 9Z.Body, Cab, Accessories Electrical Control wireless access module setting (with passive entry and start system)".

Procedure completion

=>Go to Repair verification.

8. Repair verification

1) Clear the DTC with a scan tool.

2) Turn OFF the ignition switch.

3) Press the engine start/stop button several times.

4) Observe the DTC information with a scan tool.